‘A flat dorian’ is the 2nd mode of the Gb major scale. The notes in Ab dorian are:

Ab – Bb – Cb – Db – Eb – F – Gb

If you have read the post on understanding the dorian mode, you will know that the dorian mode contains a flat 3 and a flat 7 (parallel approach). You will also know that it is the 2nd mode of a major scale (derivative approach). Let’s briefly look at how to construct Ab dorian using both the parallel approach and the derivative approach.

A Flat Aeolian Mode Using The Parallel Approach

Ab major has the following notes:

Ab – Bb – C – Db – Eb – F – G

If we flatten the 3rd note (C) and the 7th note (G) we get the following:

Ab – Bb – Cb – Db – Eb – F – Gb

A Flat Dorian Mode Using The Derivative Approach

Ab is the 2nd note of the Gb major scale:

Gb – Ab – Bb – Cb – Db – Eb – F

If we play a Gb major scale and start on the 2nd note we get the following:

Ab – Bb – Cb – Db – Eb – F – Gb

Let’s look at the Ab dorian mode in the different positions on the guitar fretboard.

Ab Dorian in the Open Position

Firstly, let’s look at Ab dorian in the open position:

Ab Dorian Mode Open Position Frets
Ab Dorian Mode Open Position Notes

Ab Dorian CAGED Positions

Now let’s look at Ab dorian in the 5 different CAGED positions along the fretboard.

A Flat Dorian in the 1st Position (Lowest Fret is 1)

Ab Dorian Mode 1st Position Frets
Ab Dorian Mode 1st Position Notes

A Flat Dorian in the 2nd Position (Lowest Fret is 2)

Ab Dorian Mode 2nd Position Frets
Ab Dorian Mode 2nd Position Notes

A Flat Dorian in the 6th Position (Lowest Fret is 6)

Ab Dorian Mode 6th Position Frets
Ab Dorian Mode 6th Position Notes

A Flat Dorian in the 7th Position (Lowest Fret is 7)

Ab Dorian Mode 7th Position Frets
Ab Dorian Mode 7th Position Notes

A Flat Dorian in the 10th Position (Lowest Fret is 10)

Ab Dorian Mode 10th Position Frets
Ab Dorian Mode 10th Position Notes

That covers the 5 basic positions and the open position of Ab dorian along the guitar fretboard. For an in depth explanation of the dorian mode, check out dorian mode explained.

Further Reading

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